Nonslipping device



March .4, 1930. R. s. BLAIR NONSLIPPING DEVICE Filed 001;. 8, 192a INVENTOR f atented M ar. 193 i i UNITEDgSTATES PATIENT OFFICE Application filed October a, 1923. serial- No. 667,122.

' "LThisinvention relates tonon-slippingde- Vices andwithregard' to its more specific fea 1 turesto such devices adapted to prevent slippingv in predetermined directions of imple "5 Inentsto which they are applied.

. One of the objects of the invention is to provide adevice of the'above nature practical and efficient and capable of operating in'a highly dependable manner. Another ll) Object is to provide a device of the above nature ofsimple and inexpensiveconstruction. Another object is to provide a practical art whereby! devices of the above character may 4 3b9 made in a convenient manner with simple apparatus. Other objects j will be in part obvious or in part pointed out hereinafter. This application is in part a continuation ziofj'my application-for non-slipping device I}: filed March 24, 1919, Serial No. 284,620,,1 ater we zo patented under the Number f1,469',766, iOct.

I :T "e i vention accordingly" eonsistsin the I featuresof construction, "combinations of ele- 1 ments, arrangementsofparts and in the sev- V eral steps and relation and order of each of the'same to one or more of the others" all as will. be 'il'lustratively described herein, and

the scope of the application of which will H be indicated in the following claims.

'30 :In the'accompanying drawinginwhich are shown one or more, various possible embodimentsof the several mechanical features of i this invention t v r a a Figure 1 showsin enlarged detail and in both plan view and sectionaportion of material adapted for use in my invention. I

Figure 2 shows aportion of the handle of a'tennis racket and anon-slipping'covering partially applied thereto,v j a 0 Figure 3 is aview-similar to Figure 2 show-1 ing adilferent form of covering. Y Figure 4 is anend view of the covering shown applied to the tennisracket in Figure 3,.

l 'i Figure 5shows a non-slipping device similar in construction'to that shown in Figure v 4 applied to a fountain pen.

Figure 6 is a plan view ofaportionof a' die member in enlarged detail adapted for l use in making non-slipping material.

59 Figure 7 showsin enlarged detail a piece of (inaterial inoperative relation to the die, an

I Figure 8 shows this material at a later stage in the process of its manufacture.

Similar reference characters refer to similar parts throughout the several views of the drawing,

I Referring now to the drawing in detail, in Figure-1 there is shown a portion of material which comprises the skin of an aquatic crea- 60 ture, in this instance the skin of a shark. I This skin has on its outer surface bony spinelike projections indicated atlO which extend outwardly therefrom andare all inclined in thesame direction. These spiny projections are minute in, the order of about one-hundredth of an inch in length being thus barely visible and they cover the shark skin with considerable density may be seen from Figure 1 which isfofl course n greatly en- 'larged detail. These projections therefore form what mightbe termed a nap permitting, forexample, ready passing of the hand thereover; in one direction, but offering great resistance to strokingln the opposite direction. A covering of this material upon any implement therefore with the inclined spines all aimed in the same direction would permit slipping. of the implement upon surfaces 'with which it comes intoccontact, in the dimotion of the inclination of the spines, but i would elfectively prevent such slipping in the opposite direction.

Referring now to Figure 2, there is shown a covering of this material. of shark skin or the like applied to the handle 11 of a tennis racket. In an implement such as a tennis racketit is highly desirable that the handle afford the player-such a grip that rotation of the handle in the hand is avoided. Such rotation is likely to occur with consequent deflection of the tennis ball, particularly when the ball is struck with the side portion of the racket near the rim thereof. As has been above explained a covering of material similar to shark skin having the spines projecting all in the same direction, would provide for such a grip as would permit rotation of the handle in one direction in the hand, but prevent such rotation in the opposite direcbe secured as by a suitable ring 1d at the end of the handle and by similar means,"if"desired, at the other end of the covered portion. In order to more securely fix the cover ing to the handle the strips maybe cemented thereto if. this-is found desirable.

-Referring now to Figure 3, there isshown a different form of non-slipping covering comprising shark skin" or the like applied to the handle 15 of a tennis racket 'orthe like.

' This covering comprises a pair of sections 16 and 17 of the shark skin having their spines inclined in opposite directions; and

' secured to an elastic band or sleeve 18. As

shown in Figure 4 the sections or strips 16 and 17'aresecuredto the elastic member 18 at their. edges 19 and 20 and 21 and 22respectively- When the elastic member 18 is slipped 'over theend of the handle 15 it stretches from'its normal position shown in Figure 4: to snugly embrace the handle and contact the entire inner surface of the'strips 16 and 17. The strips 16 and 17 donot' extend completely around the handle, but leave ateither side exposed portions 18 of the member 18. The shark skin strips are thus conveniently and dependably mounted in positionupon the handle. The spines ofthe two sections of the skin being inclined. in opposite directionsabout the handle are adapted to resist rotation thereofin either direction in the hand. If desired suitable rings, such'as 19, may be employed to encase the end portions of the covering.

. In Figure 5 theresshown a non-slipping device similar in construction to that offthe in the same direction, namely,

covering of Figures 3 and 4 applied to a fountain pen forthe purpose of retaining the pen inthe pocket. There is provided an inner sleeve or band 20 of. elastic material adapted to snugly grip the shaft-like shank of the pen, and secure to this member- 20, sub

stantially in themanner inwhich the parts 16' and 17 are secured to the ela's'tic member 18 of Figure a, are a pair of sections 21 and 22 ofnon-slipping material. These sections 21 and-22 may be of shark skin and in this instance the spines of each section are inclined along the shank of the pen. It will be seen that the pen may be readily slipped down into the pocket, but will be prevented from slipping out therefrom by the spiny projections of the parts 21 and 22 engaging the surfaces of the walls of the pocket, The device may a fountain pen. Forexample, itmight be 'desirablethat the parts21 and 22 forming I "the non-slippingsurfacesbe of gold or a upwardly be positioned at any convenient place along the length of the pen being herein shown positioned at the lower end ofthe cap por tion 23' thereof. 7

.As has been mentioned above, the parts 21 and 22 maybe of shark skin, but they are preferably made of a material formed'to have characteristics of shark skin andmore appropriatefor use on an implement such as suitable gold alloy. The appearance-of this latter form of surface is far preferable to that of shark skin and the mi'nutespiny projections of sharkskinare reproduced upon the surface ofthin bands of'a'suitahle metal suchasgoldpreferably asflwillnow be described It may here be noted, moreover,

thatthe term metal is used throughout with a broad'meaningi to comprehend any substancehaving characteristics adapting it for employmentin embodying or carrying on the invention as herein set forth.-

In Figure 6,'there is shown in enlarged detail a plan view of a portion 240i a die having a, multitude of preferably regularly spaced minute recesses 25. v 25 are preferably substantially cone-shaped; as is shown 1n the sectional view of the die These recesses in Figure 7 and eachpreferably has a crosssection substantiallythe shape of the spiny projections of the skin of a shark. In Fig ure 'Z there is shown a thinfstrip -26 of gold J of the die 24. The gold-has appreciableanalleability and by suitably working theaupper or -ether suitable metal placed uponthetop surfacetherof,'asby'rollingitwitha roller 2'Zand'With considerable downwardforce the metal of the gold-strip 26 is causedto fiow into the minuterecesses 25. 'l heflresnlt' of this processis that there are formed upon? a the surface'of the strip 26a multitude of ver tical minute projections 28 as shown in en larged detailfin Figure 8. These projections 28 are closely spacedand each resembles inv conteurthe spiny pro ections of a shark skin a roller, as 29, lightly overthese-projections 1n the direction of the arrow "as indicated in Frgure-8,the project ons areall' inclined in raisedto vertical. position. Now by passing thesame direction'as shown'at 28- and the gold strip is thus provided" with a surface similar to the surface of the shark skin shown in Figured. From the strip '26 are then marked 21 and 22 in Figure 5 and theseare secured to anelastic-band 20 at their edges as shown in Figured in any desired manner. It will be'seen that a device made asabove formed-and shaped Parts similar tothose f described provides an attachment for afoun-w tain pen or the like which has the desired neatness and attractiveness of appearance. The spiny projections of the surfaces of the gold act in the'manner of those of sharkskin of axlally elongated members mounted upon said first member and oppos te oneanother in a clrcumferential directlom'each of said to prevent the penfrom Slipping out of the pocket," The art of making these devices is one which is conveniently carried on with slmple apparatus.

a As many possible embodiments may be made'of the mechanical features of the above invention and as the art herein described might be varied in various parts all without departing from'the scopeof the invention, it is tobe understood that all matter herein set forth orshown'in the accompanyinggfdrawings is tobe interpreted as'illus trative and not ina limiting sense. A 1

I claim as my invention;.

1-. In a device ofthe class described, combination, an endless bandof elastic material, and a member having a plurality of minute inclined projections secured at spaced 7 points toithe outer surface of said band,

adapted to form a non-slipping surface about a member upon which said band is placed.

2. 'In a deviceof the class described, in como loination,ianfendless band ofelastic material, and a plurality of members secured to the outer surface of said band at spacedpoints eachfhaving a multitude of minute projectionsadapted to prevent slipping upon'sury faces with which they come into contactv 3. In a device of the class described, in combination, an elasticmember adapted to embrace a pocket implement, and a metal strip secured at spaced points to the outer surface of sald member and having an outer surface projections.

diameterand adapted to be fitted over and grip tightly an elongated portion of an implement, and a pair of axially elongated pieces of sharkskin secured to said sleeve upon opposite sides thereof and substantially opposite one another, the spines on each of said pieces of sharkskin being inclined in a direction opposite to that of the tendency of relative movement of outer contacting surfaces in the use of the implement.

7. In a device for providing a non-slipping outer surface, in combination, an elastic band axially elongated with respect to its diameter adapted to be fitted over and tightly grip an elongated portion of an implement,

and a pair of axially elongated pieces of sharkskin secured to said sleeve on opposite sides thereof andsubstantially opposite one another and spaced one from another on both of their axially extending edges whereby said "elastic sleeve is permitted to expand between comprising a multitude of inclined pointed v 4. Ina device ,foriproviding a non-.slip- ,ping outer surface, in combination, an elastic supportingmember'axially elongated with respecttO its diameter adapted to be fitted over and griptightlyan elongated part and a pair last members having'anouter surface formed of'a multitude or minute spines and said merit of the surrounding surfaces in use.-

. and adapted to be fitted over and tightly grip an elongated portion. of an implement, and'a 5. .In a device for providing a non-slipping so I spines on each member being inclinedagainst V the direction of the tendency of relative moveouter surface, incombination, an elastic sleeve axially elongated with respect to its diameter pair of members mounted upon said sleeve and opposite one another in acircumferene tial direction, said last members each being relative movement of the contacting surfaces for the use of the implement.

Y 6; In a device for providing a non-slipping outer surface, in combination, anelas- 55 tic sleeve axially elongated with'respect to its jpr'ovided on their outer surfaces with a multi- 'tude of minute spines and said spines upon I eachofsaid members being inclined in a die rection opposite to that of the tendency of 

